Basic Articulator Module Instructions - Atlas Dental

70 Pages·2011·4.01 MB·English

h 5401
M Panadent Corporation
580 S. Rancho Avenue • Colton, California 92324, USA
Tel: [phone] (cid:127) USA & Canada [phone]
Basic Articulator Module
Instructions
Introduction
Component Identification
Face-Bow (Ear-Nasion) Instructions
Maxillary Cast Mounting Instructions
Interocclusal Record Instructions
• Centric Relation
(cid:127) Protrusive
(cid:127) Left Lateral
(cid:127) Right Lateral
Mandibular Cast Mounting Instructions
Articulator Adjustments (Protrusive)
Articulator Functions
Magna-Split II Instructions
5401 L-BAM REV 2
BASIC SYSTEM COMPONENTS
1. Articulator (Model PCH shown)
2. Articulator Support Legs (not shown)
3. Pana-Mount ™ Face-bow
4. Bio-Esthetic Level Gauge
5. Molded Plastic Case
6. Mandibular Mounting Stand
7. Magna-Split II System (not shown)
8. Bite-Tray™ Registration Plates (20)
9. Bite-Tab™ Compound Discs (180)
10. Basic Instruction Manual
5401 L-BAM REV 2
FACE-BOW COMPONENTS:
1. Pana-Mount Face-Bow (Frame Assembly)
2. Mounting Fixture
3. Nasion Relator (22mm)
4. Bite-Fork & Stem Assembly (2each)
5. Hex Wrench
5401 i L-BAM REV 2
Introduction to the Panadent System
Prosthodontics has changed significantly over the years to the point where patient’s acceptance or
requests for complete removable dentures has been replaced with requests to save the natural dentition
with restorative and fixed prostheses, including implants. The relationship of teeth, TM Joints and
neuromuscular system is being increasingly recognized as important factors in fixed prosthodontics as
well as orthodontics. Concurrently, the need for user-friendly articulators that simulate individual patient’s
characteristic jaw movements has increased.
Using a point midway between the lateral and medial condyle pole to represent the path of the condyle,
research shows that the condylar movements of one patient are similar in certain aspects to those of
others. For example, beyond the lateral functional range (3mm from centric relation) contralateral condyles,
in the horizontal plane, show similar orbiting paths of about 6-7°. The curvature of protrusive and lateral
border paths in the functional range, in the sagittal plane, are approximately ¾” radii. The lateral border
and protrusive paths of contralateral condyles, in the sagittal plane, are usually identical in the functional
range (3mm). The paths of ipsilateral condyles are primarily horizontal and/or pivotal in the functional
range (3mm).
In the lateral functional range (3mm), condylar movement patterns differ primarily in two aspects: (1) the
radius curvature of the lateral border path of the contralateral condyle in the horizontal plane and (2) the
steepness of the lateral border and protrusive path in the sagittal plane.
Research shows that under functional loads, patients’ condylar movements on the contralateral side are
not straight paths. The paths curve simultaneously in the three planes of space. Jaw movement studies
also show that contralateral condylar paths create the major differences between patients’ lateral jaw
movements in the functional range (3mm). The ipsilateral condylar paths (Bennett) are primarily horizontal
and/or pivotal in the functional range (3mm).
Over the years, attempts have been made to compensate for the curved contralateral paths observed
and recorded on patients by various methods. Some manufacturers have incorporated a variable
straight-line “side shift” in their articulator guides (Fig. b). The contralateral condylar element, (Fig. b),
does not begin its detrusive movement until after the "side shift" has ended at point “S”. Thus a pure
horizontal movement takes place on the articulator. In some instances these horizontal articulator
movements encompass almost the entire occlusal width of the posterior teeth. Negative effects of
horizontal straight line overcompensating “side shift” articulator movements (Fig. b) include:
(1) Articulators that become awkward to manipulate
(2) Unnatural mandibular motion simulation
(3) Possibilities of producing low profile (flattened) occlusal surfaces which may overload patients’
temporomandibular joints, teeth, muscles, periodontia, ridges, implants, and prostheses during
function.
Compensating curved contralateral articulator paths (Fig. c ) are superior because:
(1) Research shows the articulator movements more closely simulate those of the individual patient.
(2) They enable dentists, technicians, and students to observe realistic movements of the mandible
as it translates and rotates simultaneously in three planes of space (six degrees of freedom of
motion).
(3) The articulators are easier to manipulate (user-friendly) during diagnosis as well as constructing
artificial occlusal surfaces.
(4) Curved paths help dentists and technicians create better occlusal forms while concurrently
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Introduction to the Panadent System
A functional border path of the contralateral condylar element is represented by the dotted
curved lines in (Figs. a and b), and the solid curved line (Fig. c). The path from CR to B (Fig. a)
represents an undercompensating straight line contralateral guide. The solid rectilinear line
CR-S-B (Fig. b) represents an over-compensating straight line, pure horizontal “immediate
side shift” guide. (Fig. c) represents the compensating curved path guide. The letter P in each
of the three types represents protrusive movement. The letter W represents ipsilateral movement
(Bennett) which is primarily horizontal in the functional range (3mm).
The major disadvantage of “straight line” undercompensating articulators is that most patients’
condylar movements under functional load (dotted line) exceed the border limits of the straight
path guides CR-B (Fig. a). This undercompensation creates potential posterior occlusal
interferences of a prosthesis when placed under functional loads in the mouth.
PANADENT PREFORMED CONDYLAR AXIS MOTION ANALOGS
The Panadent Articulator System is the direct result of the most advanced research in
mandibular motion simulation (see Bibliography). It is based upon information gathered from
hundreds of patients’ transverse (horizontal) condylar axis motion analogs. The end result is
a scientific rationale for uncomplicated, high fidelity, user-friendly, instrumentation for simulating
individuals characteristic jaw movements.
A series of statistically selected three-dimensional analogs of condylar axis motions are
preformed in resin. They include the curved, protrusive and curved lateral border pathways.
The series of analogs come in five sizes, each with increasing curvatures of contralateral
condylar Bennett movement: 0.5, 1.0, 1.5, 2.0, 2.5mm, for right and left sides. The half
millimeter increments are measured at a point 3mm forward in the sagittal plane from centric
relation position where a vertical line intersects the condylar pathway. The motion analogs
can be rotated individually in the sagittal plane to match the protrusive and lateral border
pathways recorded on the patient.
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Introduction to the Panadent System
The analogs can also be selected so that the right and left sides have different sized curvatures
of contralateral condylar movement. Since patients' condylar paths are primarily horizontal
and/or pivotal, in nature, the Panadent preformed motion analogs are produced with horizontal
(transtrusive) paths on the ipsilateral side.
The Panadent analog articulator is a precision instrument designed to meet the needs of
students of occlusion as well as dentists in advanced clinical practice. The Basic Articulator
Module includes one pair of motion analogs. Based on research, the 1.5mm analogs fit the
largest percent of the population (90%, see Fig. f).
Fig. d
Schematic illustration of Panadent preformed
Intercondylar Axis Motion Analogs. Note the
variations in the curved contralateral paths in the
functional range of 3.0mm from centric relation
(CR) in the horizontal plane. The curve pathway
in the vertical plane averages ¾”R. The orbiting
paths beyond the 3.0mm point are caused by
the generally pivoting ipsilateral condyle when
the mandible is forced into extreme movements.
These orbiting paths are of no clinical significance
in lateral function. The frontal plane paths are
not shown (to avoid line confusion) but are similar
to the horizontal (transverse) plane
characteristics.
Fig. e
A complete set of Panadent preformed Condylar
Axis Motion Analogs showing 0.5mm on the
bottom and increments of 0.5mm to the maximum
size of 2.5mm on the top. The right and left
analogs may be used in any combination to allow
for differences between the right and left side of
the patient. The analogs may be rotated
individually to duplicate the patients condylar axis
path.
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Introduction to the Panadent System
Fig. f
Distribution of Bennett Movement Distribution chart for 220 patients right and left
OPERATOR INDUCED
lateral jaw movements (total of 440 individual
border movements) recorded with the Lee
millimeters
per side * .25 .5 1 1.5 2 2.5 Research Axiopantograph.
Percent (%)
of 2 15 52 21 8 2
Patients
* Rt. & Lt. border movements measured on the non-working side 3mm forward on the
vertical and horizontal planes from centric relation.
PANA-MOUNT ™ FACE-BOW:
The Pana-mount Bow has been designed and engineered to be, strong, fast, easy to use,
face-bow and comfortable for the patient.
The bow can be used as an ear-bow for average-axis mounting, but also has provisions for
adding adjustable axis arms for true hinge-axis mounting. It also has a detachable indexed
bite-fork assembly and mounting fixture which eliminates the need for attaching the face-bow
directly to the articulator. By having extra bite-fork assemblies, the bow can be used immediately
for other patients and the casts may be mounted at a later time.
PANADENT JAW POSITION INTEROCCLUSAL RECORD SYSTEM
It has long been recognized that wax “check-bite” records have many shortcomings and are
unreliable in clinical practice. This manual presents a non-wax method for making accurate
centric relation and protrusive inter-occlusal records for mounting patients’ casts and adjusting
the articulator.
The Panadent Interocclusal Record System is based on the Lee method. It uses a preformed
soft metal tray (Bite-Tray™) for conveying Bite Registration material to the teeth as well as a
compound (modeling compound) lower anterior tooth position index. Softened compound
allows the operator to index the lower anterior teeth in either a retruded (CR) or a protruded
position. When hardened the compound index enables the patient to repeat and hold the
desired mandibular position while the interocclusal registration material is hardening.
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Introduction to the Panadent System
BIBLIOGRAPHY FOR PANADENT PRE-FORMED INTERCONDYLAR (HINGE)
AXIS MOTION ANALOGS AND AXI-PATH RECORDER
1. Lee, Robert L., M.S., D.D.S. : Jaw Movements Engraved in Solid Plastic for Articulator
Controls, Part I, Recording Apparatus, Jour. Prost. Dent. 22: 209-224,1969.
2. Lee, Robert L., M.S., D.D.S. : Jaw Movements Engraved in Solid Plastic for Articulator
Controls, Part I, Recording Apparatus, Jour. Prost. Dent. 22: 513-527, 1969.
3. Lundeen, Harry C., D.D.S., and Wirth, Carl G., D.D.S. : Condylar Movement Patterns
Engraved in Plastic Blocks, Jour. Prost. Dent. 30: 866-875, 1973.
4. Hobo, Sumiya, D.D.S., M.S.D., Shillingburg, Hubert T., D.D.S., and Whitsett, Lowell,
D.D.S.: Articulator Selection for Restorative Dentistry, Jour. Prost. Dent. 36:
25-43, 1976.
5. McCoy, Richard B., D.D.S., M.S., and Shryock, Edwin F., D.D.S., M.S.: A Method of
Transferring Mandibular-Movement Data to Computer Storage, Jour. Prost.
Dent. 36: 510-516, 1976.
6. Lundeen, Harry C., D.D.S., Shryrock, Edwin F., D.D.S., M.S., and Gibbs, Charles
H., Ph.D.: An Evaluation of Mandibular Border Movements: Their Character
and Significance, Jour. Prost. Dent. Vol. 40, No. 4, 442-452, Oct. 1978.
7. Lundeen, Harry C., D.D.S.: Mandibular Movement Recordings and Articulator Adjustments
Simplified, Dent. Clin. of N. America 23: No. 2, 231-241, 1979.
8. Lee, Robert L., D.D.S.: Anterior Guidance, Chapter 3 in Advances in Occlusion,
Harry C. Lundeen, D.D.S. and Charles H. Gibb, Ph.D., editors. Published by
John Wright-PSG Inc., Boston, Bristol, London 1982.
9. Lee, Robert L., D.D.S.: Esthetics and Its Relationship to Function, Chapter 5 in
Fundamentals of Esthetics, by Claude R. Rufenacht, D.D.S., Quintessence Publishing
Co., Inc., Lombard, Illinois, 1990.
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Introduction to the Panadent System
THE PANADENT MODULAR ARTICULATOR SYSTEM PROVIDES:
I. User-friendly, sophisticated instrumentation for jaw movement simulation.
2. An articulator system that meets the requirements of both removable and fixed
prosthodontics as well as orthodontics.
3. An articulator that is as uncomplicated as a straight line adjustable articulator yet
reproduces most major mandibular motions with condylar curved paths in three planes
of space (“six degrees” of freedom of movement).
4. Major parameters of mandibular movement controls include curved lateral border Bennett
and protrusive pathways.
5. Five wall analog guides for each condylar axis element for producing the rhombus
geometrics and the envelope of motion.
6. Fixed condylar axis elements rather than “adjustable intercondylar distance.”
7. A DYNA-LINK system for keeping upper and lower articulator frames joinedtogether
in eccentric movements as well as centric relation position.
8. An arcon type articulator that opens 180° while the frames remain joined together.
9. Interchangeability of mounted casts from one articulator to another (PCH and PSH
models).
10. An articulator upper frame that can be locked to the lower frame for centric axis motion
during mounting and remounting procedures.
11. A unique interocclusal record (check bite) method for adjusting articulator pre-formed
condylar motion analogs to the proper protrusive angulation and Bennett shift.
12. An average-axis face-bow (ear-nasion) with a mounting fixture which does not require
the face-bow to be joined to the articulator during mounting procedures.
13. An articulator modular system that can be expanded to include the Panadent AXI-PATH
(Ana-Digit) Recorder and true condylar axis mounting as well as the API and CPI system
for tracking condyle positions before and during treatments.
14. A modular system that will adapt to new Panadent peripherals including: Magna-Split
(magnetic mounting plates), Bio-Esthetic Level Gauge, and Magnetic bite fork support
system for supporting the bite fork.
15. A molded plastic carrying case which holds the complete system including: instruction
manual, articulator, face-bow and mounting stand, plus space for study casts and other
auxiliary items.
580 S. Rancho Avenue • Colton, California 92324
Tel: [phone] • U.S. & Canada [phone]
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Face-Bow Instructions
These instructions apply
to the following items:
M Panadent Corporation
h4000, 4130
580 S. Rancho Avenue • Colton, California 92324, USA
Includes:
Tel: [phone] (cid:127)USA & Canada [phone]
4015u
The following procedure is followed when 1
Panadent Bite-Tab compound discs are used
for bite-fork registration.
Bend backing-sheet sharply at extreme printed
end of Bite-Tab strip to free end of strip so it can
be grasped with index finger and thumb. Peel
Bite-Tab strip away from backing sheet. Do not
touch adhesive under end of tab where
compound is located.
Hold Bite-Tab with thumb and index finger at 2
lateral edges (arrows). Fold printed end of tab
back (adhesive to adhesive) at dotted line. This
fold-back produces a non-stick flap for easy
removal of Tab after maxillary cast has been
mounted. Do not touch adhesive under Bite-Tab
since powder from latex gloves will prevent
Bite-Tab from adhering to bite-fork.
Press one Bite-Tab at each of the following six 3
locations: left molar, right molar, and incisor on
upper and lower surfaces (six tabs) on clean,
dry bite-fork.
Place intra oral end of bite-fork in hot water (125°F 4
/ 40°C) for about one half to one minute to soften
Bite-Tab compound discs. If tap water is not hot
enough, hot coffee or coffee water will work well
to soften compound.
ATTENTION: Do not place bite-fork in regular
water-bath since wax residues and
oils in water-bath will prevent
Bite-Tabs from adhering to bite-fork.
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